Heat oven to 350°F and spray a 12-cup muffin tin with non-stick cooking spray.
In a large bowl, sift together the flour, baking powder, salt and sugar. Make a well in the center and pour in the milk, vanilla, egg, and melted butter; mix until smooth.
Using a ¼ cup as a scoop, put batter into the prepared muffin tin.
Choose your desired toppings (fruit, bacon, chocolate chip, etc) and use about a tablespoon for each muffin. Be sure to press the toppings down into the batter.
Bake for 10-12 minutes.
Best served warm and with syrup.